EP2326800B1 - Centrale à vapeur destinée à la production d'énergie électrique - Google Patents

Centrale à vapeur destinée à la production d'énergie électrique Download PDF

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Publication number
EP2326800B1
EP2326800B1 EP09783070.7A EP09783070A EP2326800B1 EP 2326800 B1 EP2326800 B1 EP 2326800B1 EP 09783070 A EP09783070 A EP 09783070A EP 2326800 B1 EP2326800 B1 EP 2326800B1
Authority
EP
European Patent Office
Prior art keywords
steam
bypass
pipeline
pressure
power plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP09783070.7A
Other languages
German (de)
English (en)
Other versions
EP2326800A2 (fr
Inventor
Bernd Leu
Andreas Logar
Heinz Lötters
Stephan Minuth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP09783070.7A priority Critical patent/EP2326800B1/fr
Priority to PL09783070T priority patent/PL2326800T3/pl
Publication of EP2326800A2 publication Critical patent/EP2326800A2/fr
Application granted granted Critical
Publication of EP2326800B1 publication Critical patent/EP2326800B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/165—Controlling means specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F01K13/025—Cooling the interior by injection during idling or stand-by

Definitions

  • the invention relates to a steam power plant for generating electrical energy comprising a steam turbine, a steam generator and a condenser and a live steam pipe, which fluidly connects the steam turbine to the steam generator, a Abdampfrohr ein which fluidly connects the steam turbine to the condenser and a Umleitrohr admir, the Fresh steam pipe with the exhaust steam pipe fluidly connects together.
  • Such a steam power plant is eg in documents DE 102 27 709 A1 and US 6,457,313 B1 disclosed.
  • the steam flowing out of the steam generator flows into the steam turbine and cools down, the vapor pressure decreasing.
  • the effluent steam from the steam turbine is fed to the condenser.
  • a live steam valve arranged in front of the steam turbine is closed and the live steam is conducted via a bypass pipe, the bypass pipe leading into an exhaust steam pipe of the steam turbine.
  • the Abdampfrohr ein is usually referred to as a cold reheater line, if it opens into a reheater in which the steam is heated to a higher temperature. The higher the steam temperatures are, the higher the cost of the piping, bypass stations and the Umleitdampfeinspritzung to the condenser.
  • Efforts are being made to achieve steam temperatures of about 720 ° C. Such high temperatures require the use of special materials, such as nickel-based materials.
  • Materials made of nickel are materials with a nickel content of about 40 to 50 wt .-%. However, such nickel base materials are comparatively expensive.
  • a material made of nickel-based is particularly resilient thermally.
  • the invention begins, whose task is to provide a steam power plant, which is suitable for high temperatures and can be formed comparatively low.
  • the bypass steam cooler is arranged immediately after a first branch from the live steam pipe to Umleitrohr admir.
  • the bypass steam cooler should be placed as close to the first branch as possible. This has the advantage that the costs for the production of the steam power plant can be further reduced because the use of expensive nickel base material is avoided. The closer the bypass steam cooler is mounted to the first branch from the live steam piping to the bypass piping, the less nickel base material is needed between the first branch to the bypass steam cooler.
  • cooling of the steam takes place in the bypass steam cooler by injecting cooling medium such as condensate, steam or a mixture of water and steam.
  • cooling medium such as condensate, steam or a mixture of water and steam.
  • the distance between the bypass steam cooler and the high-pressure bypass valve is selected such that the cooling medium is completely mixed with the steam.
  • the FIG. 1 shows a steam power plant 1 according to the prior art.
  • the steam power plant 1 comprises a steam generator 2, a steam turbine 3, wherein the steam turbine 3 comprises a high-pressure turbine section 3a, medium-pressure turbine section 3b and low-pressure turbine section 3c and a condenser 4. Furthermore, a live steam pipe 5 is provided, which the steam turbine 3 with the steam generator 2 fluidly connects to each other. After the steam turbine 3, a Abdampfrohr Arthur 6 is arranged, which connects the steam turbine 3 with the condenser 4 fluidly. Between the high-pressure turbine part 3a and the condenser 4, a reheater 7 is provided.
  • the steam flowing into the reheater 7 is heated to a higher temperature and conducted via a hot reheater line 8 to the medium-pressure turbine section 3b.
  • the Abdampfrohr Arthur 6 can also be referred to as a cold reheater line 9.
  • a quick-closing and control valve 10 is arranged in front of the steam turbine 3.
  • a quick-closing and control valve 11 is also arranged in front of the steam turbine 3.
  • the live steam pipe 5 is fluidly connected to the exhaust steam pipe 6 and the cold reheater pipe 9 via a Umleitrohrtechnisch 12.
  • a high-pressure diverter valve 13 is arranged.
  • the hot reheater line 8 is fluidically connected to the condenser 4 via a medium-pressure Umleitrohrtechnisch 14.
  • a medium-pressure diverter valve 17 is arranged in the medium-pressure Umleitrohr admir 14.
  • the steam is conducted from the live steam pipe 5 via the bypass pipe 12 into the cold reheater pipe 9.
  • the quick-closing and control valve 10 is closed and the high-pressure diverter valve 13 is opened. Since the temperature of the live steam flowing into the bypass pipe 12 is comparatively high, the steam is sprayed with a cooling medium 15 in a cooling unit 16 before entering the cold reheater pipe 9.
  • the steam is then passed through the reheater 7, the hot reheater line 8 to the medium-pressure Umleitrohrtechnisch 14 in the condenser 4.
  • the quick-closing and control valve 11 is closed and the medium-pressure diverter valve 17 is opened.
  • the steam is in turn injected with a cooling medium 18 in a cooling unit 19, so that the capacitor can absorb the amounts of energy. Since the temperatures and the pressure of the steam are comparatively high, the live steam pipe 5, the bypass pipe 12, the hot reheater pipe 9 and the medium pressure bypass pipe 14 must be designed for the pressure and the temperature of the reheater 7. The higher the steam temperatures are, the higher are the costs for the pipelines 5, 12, 9, 8, 1, for the valves 17, 13 and the cooling units 16 and 19.
  • FIG. 2 a steam power plant 1 according to the invention is shown.
  • the difference to the in FIG. 1 illustrated steam power plant 1 is that in the Umleitrohr admir 12 and in the medium-pressure Umleitrohr admir 14 a Umleitdampfkühler 20 and a medium-pressure Umleitdampfkühler 21 are arranged.
  • the bypass steam cooler 20 and the medium pressure bypass steam cooler 21 are for cooling one in the bypass pipe 12 and the medium-pressure Umleitrohrtechnisch 14 located flowable or stationary steam formed.
  • condensate, steam or a mixture of water and steam is injected into the flowing or standing steam.
  • the temperature of the flowing or standing steam is reduced.
  • the supplied into the steam cooling medium 22 thus cools the steam.
  • the injection of the cooling medium 22 into the Umleitrohrtechnisch 12, and in the medium-pressure Umleitrohr admir 14 should be as close to a first branch 23 and after a second branch 24 are arranged.
  • the distance between the bypass steam cooler 20 and the high-pressure bypass valve 13 is selected such that the steam is completely mixed with the cooling medium 22.
  • the distance between the medium-pressure Umleitdampfkühler 21 and the medium-pressure diverter valve 17 is selected such that the steam with the cooling medium 22 can be completely mixed.
  • the cooling unit 16 and 19 can be dispensed with the cooling unit 16 and 19, if the live steam parameters have corresponding values. For this, the live steam mass flow, pressure and temperature, water injection quantity and temperature must have permissible values.
  • the bypass steam cooler 20 and the medium-pressure bypass steam cooler 21 are switched on as soon as the bypass valve 13 and the medium-pressure bypass valve 17 are opened. As a result, an inadmissible temperature exceeded in the cooled Umleitrohrön 25 and 26 effectively avoided.
  • the bypass steam cooler 20 is operated until the temperatures before the bypass steam cooler 20 fall below the permissible temperature in the pipelines 25. If drainages or Anürmtechnischen are arranged in the cooled Umleitrohr Oberen 25 and 26, they must remain closed until the temperature before Umleitdampfkühler 20 and medium-pressure Umleitdampfkühler 21 below the allowable temperature in the cooled pipes 25 and 26 respectively.

Claims (11)

  1. Centrale ( 1 ) à vapeur pour produire de l'énergie électrique, comprenant une turbine ( 3 ) à vapeur, un générateur ( 2 ) de vapeur et un condenseur ( 4 ), ainsi qu'une canalisation ( 5 ) pour de la vapeur vive, qui relie en technique des fluides la turbine ( 3 ) à vapeur au générateur ( 2 ) de vapeur,
    un conduit ( 6 ) pour de la vapeur d'échappement, qui relie entre eux en technique des fluides la turbine ( 3 ) à vapeur et le condenseur ( 4 ),
    une canalisation ( 12 ) de déviation, qui relie entre eux en technique des fluides la canalisation ( 5 ) pour de la vapeur vive et la canalisation ( 6 ) pour de la vapeur d'échappement,
    dans laquelle un refroidisseur ( 20 ) de vapeur de déviation est prévu dans la canalisation ( 12 ) de déviation,
    qui est constitué pour refroidir une vapeur sortant dans la canalisation ( 12 ) de déviation,
    caractérisée
    en ce que le refroidisseur ( 20 ) de vapeur de déviation est monté directement après une première dérivation ( 23 ) allant de la canalisation ( 5 ) pour de la vapeur vive à la canalisation ( 12 ) de déviation.
  2. Centrale ( 1 ) à vapeur suivant la revendication 1,
    dans laquelle la turbine ( 3 ) à vapeur comprend une turbine ( 3a ) à haute pression, une turbine ( 3b ) à moyenne pression, ainsi qu'une turbine ( 3c ) à basse pression.
  3. Centrale ( 1 ) à vapeur suivant la revendication 2, comprenant un surchauffeur ( 7 ) intermédiaire,
    dans laquelle il est prévu une canalisation ( 9 ) de surchauffeur intermédiaire froide, qui relie en technique des fluides la sortie pour la vapeur de la turbine ( 3 ) partielle de haute pression au surchauffeur ( 7 ) intermédiaire,
    la canalisation ( 12 ) de déviation reliant en technique des fluides la canalisation ( 5 ) de la vapeur vive à la canalisation ( 9 ) de surchauffeur intermédiaire froide.
  4. Centrale ( 1 ) à vapeur suivant la revendication 3, comprenant une canalisation ( 8 ) de surchauffeur intermédiaire chaude, qui relie en technique des fluides le surchauffeur ( 7 ) intermédiaire à la turbine ( 3b ) partielle de moyenne pression,
    dans laquelle il est prévu une canalisation ( 14 ) de déviation de moyenne pression, qui relie en technique des fluides le conduit ( 8 ) chaud de surchauffeur intermédiaire au condenseur ( 4 ),
    dans laquelle il est prévu un refroidisseur ( 21 ) de vapeur de déviation de moyenne pression dans la canalisation ( 14 ) de déviation de moyenne pression, qui est constitué pour refroidir une vapeur pouvant passer dans la canalisation ( 14 ) de déviation de moyenne pression.
  5. Centrale ( 1 ) à vapeur suivant l'une des revendications 1 à 3,
    dans laquelle il est prévu une vanne ( 13 ) de déviation de haute pression dans la canalisation ( 12 ) de déviation.
  6. Centrale ( 1 ) à vapeur suivant la revendication 4,
    dans laquelle il est prévu une vanne ( 17 ) de déviation de moyenne pression dans la canalisation ( 14 ) de déviation de moyenne pression.
  7. Centrale ( 1 ) à vapeur suivant l'une des revendications 1 à 6,
    dans laquelle le refroidissement de la vapeur dans le refroidisseur ( 20 ) de vapeur de déviation s'effectue par pulvérisation de fluide ( 22 ) de refroidissement, comme du produit condensé, de la vapeur ou un mélange d'eau et de vapeur.
  8. Centrale ( 1 ) à vapeur suivant la revendication 4,
    dans laquelle le refroidissement de la vapeur dans le refroidisseur ( 21 ) de vapeur de déviation de moyenne pression s'effectue par pulvérisation de fluide ( 22 ) de refroidissement, comme du produit condensé, de la vapeur ou un mélange d'eau et de vapeur.
  9. Centrale ( 1 ) à vapeur suivant la revendication 4,
    dans laquelle le refroidisseur ( 21 ) de vapeur de déviation de moyenne pression est monté directement après une deuxième dérivation ( 24 ) allant du conduit ( 8 ) chaud de surchauffeur intermédiaire à la canalisation ( 14 ) de déviation de moyenne pression.
  10. Centrale ( 1 ) à vapeur suivant la revendication 5,
    dans laquelle la distance entre le refroidisseur ( 20 ) de vapeur de déviation et la vanne ( 13 ) de déviation de haute pression est choisie de manière à ce que le fluide ( 15 ) de refroidissement puisse se mélanger complètement à la vapeur.
  11. Centrale ( 1 ) à vapeur suivant la revendication 6,
    dans laquelle la distance entre le refroidisseur ( 21 ) de vapeur de déviation de moyenne pression et la vanne ( 17 ) de déviation de moyenne pression est choisie de manière à ce que le fluide ( 22 ) de refroidissement puisse se mélanger complètement à la vapeur.
EP09783070.7A 2008-09-24 2009-09-16 Centrale à vapeur destinée à la production d'énergie électrique Not-in-force EP2326800B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09783070.7A EP2326800B1 (fr) 2008-09-24 2009-09-16 Centrale à vapeur destinée à la production d'énergie électrique
PL09783070T PL2326800T3 (pl) 2008-09-24 2009-09-16 Elektrownia parowa do wytwarzania energii elektrycznej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08016801A EP2213847A1 (fr) 2008-09-24 2008-09-24 Centrale à vapeur destinée à la production d'énergie électrique
EP09783070.7A EP2326800B1 (fr) 2008-09-24 2009-09-16 Centrale à vapeur destinée à la production d'énergie électrique
PCT/EP2009/061993 WO2010034659A2 (fr) 2008-09-24 2009-09-16 Centrale à vapeur pour produire de l'énergie électrique

Publications (2)

Publication Number Publication Date
EP2326800A2 EP2326800A2 (fr) 2011-06-01
EP2326800B1 true EP2326800B1 (fr) 2016-11-16

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP08016801A Withdrawn EP2213847A1 (fr) 2008-09-24 2008-09-24 Centrale à vapeur destinée à la production d'énergie électrique
EP09783070.7A Not-in-force EP2326800B1 (fr) 2008-09-24 2009-09-16 Centrale à vapeur destinée à la production d'énergie électrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08016801A Withdrawn EP2213847A1 (fr) 2008-09-24 2008-09-24 Centrale à vapeur destinée à la production d'énergie électrique

Country Status (8)

Country Link
US (1) US8925321B2 (fr)
EP (2) EP2213847A1 (fr)
JP (2) JP2012503737A (fr)
KR (1) KR101322148B1 (fr)
CN (1) CN102165145B (fr)
PL (1) PL2326800T3 (fr)
RU (1) RU2481477C2 (fr)
WO (1) WO2010034659A2 (fr)

Families Citing this family (8)

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EP2428653A1 (fr) * 2010-09-10 2012-03-14 Siemens Aktiengesellschaft Mode de fonctionnement de pression intermédiaire simple pour centrales à turbine à vapeur solaires
GB2485836A (en) 2010-11-27 2012-05-30 Alstom Technology Ltd Turbine bypass system
EP2500549A1 (fr) * 2011-03-14 2012-09-19 Siemens Aktiengesellschaft Ecran d'injection pour une centrale à vapeur
US10316700B2 (en) 2015-02-24 2019-06-11 Siemens Aktiengesellschaft Combined cycle power plant having supercritical steam turbine
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EP3258074A1 (fr) 2016-06-14 2017-12-20 Siemens Aktiengesellschaft Centrale thermique à vapeur pour produire de l'énergie électrique

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Also Published As

Publication number Publication date
US8925321B2 (en) 2015-01-06
KR20110047245A (ko) 2011-05-06
EP2326800A2 (fr) 2011-06-01
CN102165145A (zh) 2011-08-24
EP2213847A1 (fr) 2010-08-04
WO2010034659A3 (fr) 2010-08-26
PL2326800T3 (pl) 2017-05-31
CN102165145B (zh) 2014-05-14
WO2010034659A2 (fr) 2010-04-01
US20110167827A1 (en) 2011-07-14
JP2012211595A (ja) 2012-11-01
KR101322148B1 (ko) 2013-10-28
RU2011116163A (ru) 2012-10-27
JP5314178B2 (ja) 2013-10-16
RU2481477C2 (ru) 2013-05-10
JP2012503737A (ja) 2012-02-09

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